Kushandiswa kwesimbi isina simbi tubing mu petroleum uye petrochemical indasitiri
Simbi isina tsvina zvichienderana nemakemikari anoumbwa anogona kukamurwa kuita Cr Stainless simbi, CR-Ni Stainless simbi, CR-Ni-Mo Stainless simbi, zvinoenderana nendima yekushandisa inogona kukamurwa kuita yekurapa simbi isina tsvina, yemhepo corrosion inodzivirira simbi isina tsvina, anti- oxidation Stainless simbi, Cl - ngura inodzivirira Stainless simbi.Asi iyo inonyanya kushandiswa dhizaini inoenderana nechimiro chesimbi kurongedza, kazhinji inogona kukamurwa kuita ferritic Stainless simbi, austenitic Stainless simbi, martensitic Stainless simbi, duplex Stainless simbi uye kunaya kwemvura kuomesa simbi isina tsvina.Mu petroleum uye petrochemical applications, austenitic Stainless simbi, ferritic Stainless simbi uye duplex Stainless simbi account chikamu chikuru.
Ferritic Stainless simbi Cr zvemukati zvakajairika pakati pe13% -30%, C yemukati kazhinji isingasviki 0.25%, kuburikidza neannealing kana kuchembera, carbide muferritic zviyo muganho kunaya, kuitira kuti iwane kuramba ngura.Kazhinji kutaura, kusadzivirirwa kwekuora kweferritic simbi isina tsvina kwakadzikira pane austenitic Stainless simbi uye duplex simbi, asi yakakwirira kupfuura martensitic Stainless simbi.Asi nekuda kwemutengo wayo wakaderera wekugadzira kana uchienzaniswa nemamwe simbi isina tsvina, saka, mumakemikari uye petrochemical application, yepakati inodzivirira ngura uye simba zvinodiwa hazvina kukwirira mumunda wenzvimbo yekushandisa.Zvakadai semumafuta esarufa, hydrogen sulfide, tembiricha yekamuri nitric acid, carbonic acid, hydrogen ammonia mai doro, urea kugadzirwa kwepamusoro-tembiricha ammonia, urea mai doro uye vinylon kugadzirwa kwevinyl acetate, acrylonitrile nedzimwe nharaunda zvinoshandiswa zvakanyanya.
Iyo yakawanda Cr yemukati martensitic simbi isina tsvina iri pakati pe13% -17%, uye iyo C yemukati yakakwira, pakati pe0.1% ne0.7%.Iine simba rakakwirira, kuoma uye kupfeka kuramba, asi kuramba kwecorrosion kwakaderera.Inonyanya kushandiswa mupetroleum uye petrochemical munda munzvimbo umo corrosive medium haina kusimba, senge yakakwira kuomarara uye kukanganisa kurodha zvikamu, senge steam turbine blades, mabhaudhi uye zvimwe zvine hukama zvikamu uye zvikamu.
Izvo zviri muCr mu austenitic simbi isina tsvina iri pakati pe17% -20%, zviri muNi zviri pakati pe8% -16%, uye zvinyorwa zveC zvinowanzodzika kudarika 0.12%.Iyo austenitic chimiro inogona kuwanikwa pakamuri tembiricha nekuwedzera Ni kuwedzera iyo austenitic shanduko nzvimbo.Austenitic Stainless Stainless corrosion resistance, plasticity, kuoma, processing performance, welding performance, tembiricha yakaderera kana ichienzaniswa nedzimwe simbi isina tsvina yakanyanya kunaka, saka kushandiswa kwayo munzvimbo dzakasiyana siyana kwakawedzera, kushandiswa kwayo kunosvika 70% yehuwandu hwese. chesimbi isina tsvina.Mumunda wepetroleum uye petrochemical, yakasimba corrosive yepakati uye yakaderera tembiricha yepakati, zvakanakira austenitic Stainless simbi yakakura, senge yakakwira corrosion resistance, kunyanya chikamu chemukati mukupokana ne intergranular corrosion environment, senge heat exchanger/pipe fittings, cryogenic. Liquefied natural gas (LNG) pombi, senge urea, sulfur ammonia kugadzira mudziyo, flue gasi guruva kubviswa uye desulfurization mudziyo.
Duplex simbi isina tsvina inogadzirwa pahwaro hweimwe-chikamu simbi isina simbi, iyo Ni yemukati inowanzoita inenge hafu yeaustenitic simbi isina tsvina Ni yemukati, ichidzikisa mutengo wealloy.Austenitic Stainless simbi ine yakanakisa corrosion kuramba uye yakakwirira yakazara kuita, inogadzirisa kushaya simba kweferritic uye martensitic Stainless simbi simbi inodzivirira, austenitic Stainless simbi simba uye kupfeka kuramba.Mumunda wepetroleum uye petrochemical, inonyanya kushandiswa mumapuratifomu emvura yegungwa anodzivirira kukora kwemafuta ekumahombekombe, zvinhu zvine acidic uye zvishandiso, kunyanya mugomba rinopesana nekuora.
Kunaya kunosimbisa simbi isina tsvina kunonyanya kuburikidza nekunaya kwekusimbisa nzira yekuwana yakakwira simba rekuita, inopirawo yayo yekurarisa kuramba, saka haishandiswe zvishoma mukuora svikiro, inowanzoshandiswa mumigodhi yepetrochemical migodhi nemamwe maindasitiri.
Kushandiswa kwesimbi isina simbi tubing mu petroleum uye petrochemical indasitiri
Petroleum uye petrochemical indasitiri ndiyo mbiru indasitiri yehupfumi hwenyika, iyo inoita basa rakakosha muhupfumi hwenyika.Mumakore makumi maviri apfuura, pombi yesimbi isina musono ingave isina musono pombi kana welded pombi mudanho rekugadzira tekinoroji yakagadziridzwa zvakanyanya.Iyo pombi yesimbi isina tsvina inogadzirwa nevamwe vagadziri vepamba yasvika pamwero unogona kutsiva zvachose zvigadzirwa zvinotengeswa kunze kwenyika, ichiziva kugarisana kwepombi yesimbi.
Muindasitiri yepetroleum uye petrochemical, pombi yesimbi isina tsvina inonyanya kushandiswa mupombi yekufambisa sisitimu, kusanganisira yakakwira-kudzvanya chubhu yevira, pombi, peturu inopwanya pombi, pombi inotakura mvura, chubhu yekutsinhana kupisa uye zvichingodaro.Simbi isina tsvina inodiwa kuti iite zvakanaka mukunyorova uye sevhisi yeasidhi.
Nguva yekutumira: Jun-20-2022